Flora of North America species comparison

ascending to erect, 12–35 cm, glabrous.

ascending to erect, 22–100 cm, glaucous.

basal and cauline, glabrous;

basal and proximal cauline 20–110 × 14–40(–60) mm, blade spatulate to obovate, base tapered, apex rounded, mucronate, or retuse;

cauline 1–3 pairs, sessile, 20–58 × 8–23 mm, blade ovate to obovate or lanceolate, base tapered to cordate-clasping, apex obtuse to mucronate or retuse.

cauline 6–18 pairs, sessile, (8–)25–70 × (1–)2.5–4(–6) mm, blade lanceolate to linear, base tapered, margins entire, apex acute to acuminate.

continuous, sometimes interrupted, cylindric, 3–15 cm, axis glabrous, verticillasters 5–10, cymes 2–6-flowered;

proximal bracts ovate to lanceolate, 11–38 × 5–13 mm;

peduncles and pedicels glabrous, rarely obscurely glandular distally.

interrupted, cylindric, 3–27 cm, axis sparsely glandular-pubescent, rarely glabrous, verticillasters (2–)4–9, cymes 1–3(–5)-flowered;

proximal bracts lanceolate to linear, 3–35 × 1–5 mm;

peduncles and pedicels spreading or ascending, glandular-pubescent.

calyx lobes ovate to lanceolate, 4.5–8 × 1.8–2.4 mm, margins erose, broadly scarious, glabrous rarely obscurely glandular-pubescent proximally or along margins;

corolla blue to violet, rarely pink, with or without reddish or purple nectar guides, tubular-funnelform, 16–20(–22) mm, obscurely glandular externally or glabrous, sparsely white-villous internally abaxially or glabrous, tube 6–7 mm, throat gradually inflated, 5–6 mm diam., rounded or slightly 2-ridged abaxially;

stamens included or longer pair reaching orifice, pollen sacs opposite, 0.8–1.4 mm, sutures papillate;

staminode 8–10 mm, included or reaching orifice, 0.4–1 mm diam., tip strongly recurved, distal 3–4 mm moderately to densely pubescent, hairs golden yellow, to 0.7 mm;

style 8–10 mm.

calyx lobes ovate, 3.8–6 × 2.6–4 mm, glabrous or sparsely glandular-pubescent;

corolla blue to violet or purple, without nectar guides, strongly bilabiate, ventricose-ampliate, 23–32 mm, glabrous or glandular-pubescent externally, sparsely white-lanate internally abaxially, glandular-pubescent adaxially, tube 7–11 mm, length 1.8–2 times calyx lobes, throat gradually inflated, not constricted at orifice, 8–13 mm diam., slightly 2-ridged abaxially;

stamens included, filaments of shorter pair glandular-puberulent proximally, pollen sacs navicular, 1.8–2.4 mm, sutures denticulate, teeth to 0.1 mm;

staminode 10–13 mm, included, 0.6–0.7 mm diam., tip straight, distal 3–7 mm sparsely to densely pilose, hairs yellow, to 1 mm;

proximal 1–3 mm glandular-pubescent;

style 19–23 mm, glabrous.

8–12 × 6–8 mm.

10–17 × 5–7 mm, glabrous.